PT-2025-8425 · Linux+4 · Linux Kernel+4

Kyle Smith · Published 2022-05-16 · Updated 2025-09-26 · CVE-2022-49492

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A NULL pointer dereference issue has been identified in the Linux kernel, specifically in the nvme-pci module. The issue arises when the nvme alloc admin tags function fails to set up a queue due to an error, such as -ENOMEM, and returns an error message. However, the error handling mechanism does not properly check for a NULL pointer, leading to a bad pointer dereference when attempting to quiesce a non-existent queue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-02221

CESA-2023_7077

CVE-2022-49492

RHSA-2023:2458

RHSA-2023:7077

RHSA-2023_2458

RHSA-2023_7077

SUSE-SU-2025:03310-1

SUSE-SU-2025:03384-1

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_03310-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

References · 1545

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49492.json · Exploit
• https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49492 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03384-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49492 · Vendor Advisory
• https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49492 · Security Note
• https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 · Patch
• https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 · Patch
• https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49492 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 · Patch